One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10,12,14)(11,15,16,13)(17,18,22,24)(19,21,26,27)(20,28,30,23)(25,29,32,31)(9,11)(10,13)(12,16)(14,15)(17,19)(18,21)(20,29)(22,26)(23,25)(24,27)(28,32)(30,31) involution — undirected(2,5)(6,8)(10,14)(11,16)(17,20,24,28,22,30,18,23)(19,25,21,31,26,32,27,29)(10,14)(13,15)(17,18,22,24)(19,21,26,27)(20,23,30,28)(25,31,32,29)(1,3,4,7)(2,6,5,8)(17,21,24,26,22,27,18,19)(20,29,28,25,30,31,23,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.